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Gonzalez-Garcia J. What the PHIRI federated research infrastructure has achieved so far? Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac129.467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
PHIRI infrastructure follows a federated approach that is governed following the European Interoperability Framework. The vision of PHIRI is to create an infrastructure for individual level data processing following the privacy-by-design principle in a data-centric approach. As a basis to legal interoperability and compliance with the GDPR, the queries or algorithms are moved to the data instead of moving the data. So far, the PHIRI technological developments have focused on a client-server architecture. In this architecture a Coordinator Hub, the server, is in charge of orchestrating the deployment of the data-centric analysis solutions, in the form of R and Python scripts, that will be later executed in the partner nodes (data hubs), the clients. To perform the orchestration the Coordinator Hub encapsulates the scripts in software containers, using Docker images; all the outputs are published in Zenodo. The software containers are then deployed manually from Zenodo in the partner nodes and executed by its IT specialists using their own individual level data - the software containers have represented the technical interoperability layer. The data used on each partner has been previously adapted to a common data model (CDM) and the quality of the dataset has been assessed against the data model by each partner -this has represented the semantic interoperability layer. Finally, the outputs of the analysis's execution are aggregated data that are sent back to the Coordinator Hub to perform a comparative analysis. This stepwise approach has been tested in various research questions promoted by a leading researcher and agreed by the partner nodes who act as data hubs. A help-desk services and a developer's forum and a help-desk service have been set up to ease the implementation and deployment of the research queries - these both have represented the organisational interoperability layer
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Affiliation(s)
- J Gonzalez-Garcia
- Biocomputing Unit, Institute for Health Sciences in Aragon , Zaragoza, Spain
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Bernal-Delgado E, Gonzalez-Garcia J, Derycke P, Schutte N, Bogaert P, Saso M. The role of PHIRI in the EHDS2. Eur J Public Health 2022. [PMCID: PMC9593919 DOI: 10.1093/eurpub/ckac129.369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The Population Health Information Research Infrastructure (PHIRI) is setting the foundations for the design, implementation and deployment of a fully operative European research infrastructure on population health research in the next few years. In a nutshell, this effort represents setting up the principles and instruments for the governance of the reuse of data for research purposes in a number of aspects - the legal and ethical foundations for the mobilization of data, including sensitive data; how the different nodes in the infrastructure organize to respond multiple research questions in a federated manner; how to ensure high standards of data quality and data interoperability; and, how technological solutions can preserve a safe use of the data while enabling sound scientific outputs. PHIRI has been challenged to provide real-life solutions to each of these aspects. Acting as a demonstration project, PHIRI is currently providing solutions to researchers that are trying to solve their research questions. Building on this experience, in the future, PHIRI is expected to provide support and services to population health researchers that build their research on the secondary use of health data. Among those services: data discovery; data harmonization services (e.g., discovery and use of common data models and interoperability standards); technological services (e.g., playgrounds with synthetic data, secure process environments); research outputs archival (e.g., maintenance and dissemination of the knowledge base generated in the infrastructure); and, training and capacity building. Interestingly, PHIRI can be seen as a primer for the upcoming European Health Data Space for secondary use (EHDS2). In this workshop will be discussing how to line up PHIRI's vision and role within the EHDS2.
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Affiliation(s)
- E Bernal-Delgado
- Data Science for Health Services and Policy Research, Institute for Health Sciences, IACS , Zaragoza, Spain
| | - J Gonzalez-Garcia
- Data Science for Health Services and Policy Research, Institute for Health Sciences, IACS , Zaragoza, Spain
| | - P Derycke
- EU Health Information Systems , Sciensano, Brussels, Belgium
| | - N Schutte
- EU Health Information Systems , Sciensano, Brussels, Belgium
| | - P Bogaert
- EU Health Information Systems , Sciensano, Brussels, Belgium
| | - M Saso
- EU Health Information Systems , Sciensano, Brussels, Belgium
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Moreno-Luna R, Martin-Jimenez DI, Callejón-Leblic MA, Gonzalez-Garcia J, Maza-Solano JM, Porras-Gonzalez C, Del Cuvillo-Bernal A, Sanchez-Gomez S. Usefulness of bilateral mucoplasty plus reboot surgery in severe type-2 chronic rhinosinusitis with nasal polyps. Rhinology 2022; 60:368-376. [PMID: 35818923 DOI: 10.4193/rhin22.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Although extended endoscopic sinus surgery (ESS) constitutes an alternative approach in patients with Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), the surgical techniques proposed so far do not allow for an optimal control of the disease. This study introduces bilateral mucoplasty as a complementary technique to extended ESS such as reboot surgery, analyzing its benefits in healing and quality of life (QoL). METHODS Patients diagnosed with severe Type-2 CRSwNP were selected for a prospective cohort study in two surgery groups: reboot surgery plus bilateral mucoplasty versus reboot surgery only. In the first group, an autologous endonasal mucosal graft from the nostril floor was placed bilaterally onto the ethmoidal roof. Endoscopic, radiological and QoL outcomes were compared before and one year after surgery between the two groups using Modified Lund Kennedy (LKM), Meltzer and Lund Mackay (LM) scores, and the Sino-Nasal Outcome Test 22 (SNOT-22). RESULTS 64 patients with homogeneous baseline characteristics were included: 17 patients underwent a reboot surgery plus a bilateral mucoplasty and 47 a reboot surgery only. LKM, Meltzer and SNOT-22 scores showed significant differences before and after surgery in both groups, with higher improvement in the mucoplasty group. A greater mean improvement of 20.5 ± 6.4 points in SNOT-22 change was associated with bilateral mucoplasty. CONCLUSION Bilateral mucoplasty plus reboot surgery constitutes a useful surgical resource in Type-2 CRSwNP patients, showing improved endoscopic, radiological and QoL outcomes one year after surgery. Further studies are needed to determine their long-term benefits.
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Affiliation(s)
- R Moreno-Luna
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
| | - D I Martin-Jimenez
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
| | - M A Callejón-Leblic
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
| | - J Gonzalez-Garcia
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
| | - J M Maza-Solano
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
| | - C Porras-Gonzalez
- Molecular Biology and Biomedicine department. Hospital Universitario Virgen de la Macarena, Seville, Spain
| | - A Del Cuvillo-Bernal
- Rhinology and Asthma Unit, ENT Department, Hospital de Jerez, Jerez de la Frontera, Cádiz, Spain
| | - S Sanchez-Gomez
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
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Moreno-Luna R, Gonzalez-Garcia J, Maza-Solano JM, Molina-Fernandez E, Pinheiro-Neto CD, Del Cuvillo Bernal A, Langdon C, Sanchez-Gomez S. Free nasal floor mucosal grafting after endoscopic total ethmoidectomy for severe nasal polyposis: a pilot study. Rhinology 2019; 57:219-224. [PMID: 30688317 DOI: 10.4193/rhin18.178] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND We report a novel surgical technique based on an endonasal free mucosal graft (mucoplasty) for improving clinical results and local healing in chronic rhinosinusitis with nasal polyps (CRSwNP). METHODS Patients diagnosed with bilateral CRSwNP scheduled for endoscopic sinus surgery were included. They underwent complete removal of anterior and posterior ethmoid cells, in addition to bilateral type III frontal sinusotomy. An endoscopic mucoplasty was performed in the left nasal cavity, whereas the right nasal cavity served as control. Patients were evaluated before surgery and 6 months after operation, including Sino-Nasal Outcome Test (SNOT-22), Visual Analogue Scale (VAS) for olfaction, endoscopic evaluation using the Modified und-Kennedy (MLK) scoring system and healing evaluation. RESULTS Ten patients (mean age 53.6 years) were included. A significa t decrease of SNOT-22 score from 57.0 (21.1) to 20.3 (20.6) (P = 0.024) and a non-significa t decrease of VAS for olfaction score from 9.3 (0.5) to 4.6 (3.9) were found. Preoperative mean MLK score was 4.9 (0.7) in the right nostril and 4.8 (1.0) in the left one. After operation, there was a greater decrease of MLK score in the left nostril than in the right (1.9 [1.0] vs. 1.3 [0.8], P = 0.034). Better healing was proved in the nostril with the mucoplasty. CONCLUSION Endonasal mucoplasty could be an effective, safe and feasible complementary surgical procedure in the treatment of CRSwNP. The reduced local edema associated with lower amount of secretions may confer a better control in the frontal recess, orbital wall and nasal roof.
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Affiliation(s)
- R Moreno-Luna
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
| | - J Gonzalez-Garcia
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
| | - J M Maza-Solano
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
| | - E Molina-Fernandez
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
| | - C D Pinheiro-Neto
- Division of Otolaryngology/Head and Neck Surgery, Department of Surgery, Albany Medical Center, Albany, NY, USA
| | - A Del Cuvillo Bernal
- Rhinology and Asthma Unit, ENT Department, Hospital de Jerez, Jerez de la Frontera, Cadiz, Spain
| | - C Langdon
- Rhinology Unit and Smell Clinic, Department of Otorhinolaryngology, Clinical and Experimental, Respiratory Immunology, IDIBAPS, Hospital Clinic i Universitari, Barcelona, Spain
| | - S Sanchez-Gomez
- Rhinology Unit, Department of Otolaryngology, Hospital Universitario Virgen de la Macarena, Seville, Spain
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Gonzalez-Garcia J. [Hubris syndrome in neurosurgery]. Rev Neurol 2019; 68:346-353. [PMID: 30963532 DOI: 10.33588/rn.6808.2018355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Hubris syndrome (HS) is an acquired psychiatric disorder that affects people who exercise power in any of its forms. It has been reported in many fields, from politics to finance. The physician-patient relationship is also one of power. A lack of humbleness and empathy in this situation can lead to qualities such as self-confidence and self-assurance becoming pride, arrogance and high-handedness, which characterise a doctor suffering from HS. AIMS To identify the symptoms of HS in the medical setting that make it easier to diagnose and to help healthcare organisations anticipate and mitigate its consequences. DEVELOPMENT The diagnostic criteria for HS initially reported in political leaders with government responsibilities are analysed and transferred to the medical field of neurosurgery. Two forms of medical HS are described and ten diagnostic criteria are proposed that are valid for any physician-patient relationship. CONCLUSIONS HS is an acquired psychiatric disorder that is triggered by power and enhanced by success, and can easily be observed on a daily basis in physicians working in settings that are very close to us. Early identification of these medical behaviours is necessary to be able to mitigate their consequences.
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Nadappuram BP, Cadinu P, Barik A, Ainscough AJ, Devine MJ, Kang M, Gonzalez-Garcia J, Kittler JT, Willison KR, Vilar R, Actis P, Wojciak-Stothard B, Oh SH, Ivanov AP, Edel JB. Nanoscale tweezers for single-cell biopsies. Nat Nanotechnol 2019; 14:80-88. [PMID: 30510280 DOI: 10.1038/s41565-018-0315-8] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Accepted: 10/19/2018] [Indexed: 05/19/2023]
Abstract
Much of the functionality of multicellular systems arises from the spatial organization and dynamic behaviours within and between cells. Current single-cell genomic methods only provide a transcriptional 'snapshot' of individual cells. The real-time analysis and perturbation of living cells would generate a step change in single-cell analysis. Here we describe minimally invasive nanotweezers that can be spatially controlled to extract samples from living cells with single-molecule precision. They consist of two closely spaced electrodes with gaps as small as 10-20 nm, which can be used for the dielectrophoretic trapping of DNA and proteins. Aside from trapping single molecules, we also extract nucleic acids for gene expression analysis from living cells without affecting their viability. Finally, we report on the trapping and extraction of a single mitochondrion. This work bridges the gap between single-molecule/organelle manipulation and cell biology and can ultimately enable a better understanding of living cells.
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Affiliation(s)
| | - Paolo Cadinu
- Department of Chemistry, Imperial College London, London, UK
| | - Avijit Barik
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, USA
| | - Alexander J Ainscough
- Department of Chemistry, Imperial College London, London, UK
- Department of Experimental Medicine and Toxicology, Imperial College London, London, UK
| | - Michael J Devine
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - Minkyung Kang
- Department of Chemistry, Imperial College London, London, UK
| | | | - Josef T Kittler
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | | | - Ramon Vilar
- Department of Chemistry, Imperial College London, London, UK
| | - Paolo Actis
- School of Electronic and Electrical Engineering, Pollard Institute, University of Leeds, Leeds, UK
| | | | - Sang-Hyun Oh
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, USA
| | | | - Joshua B Edel
- Department of Chemistry, Imperial College London, London, UK.
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Maza-Solano J, Gonzalez-Garcia J, Moreno-Luna R, Ambrosiani-Fernandez J, Dominguez-Duran E, Sanchez-Gomez S. “ABCDEF Checklist" based on 3D radiological images for preoperative planning of endoscopic sinus surgery. RHINOL 2018. [DOI: 10.4193/rhinol/18.054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Bandeira S, Gonzalez-Garcia J, Pensa E, Albrecht T, Vilar R. A Redox-Activated G-Quadruplex DNA Binder Based on a Platinum(IV)-Salphen Complex. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709968] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | | | - Evangelina Pensa
- Department of Chemistry; Imperial College London; London SW7 2AZ UK
| | - Tim Albrecht
- Department of Chemistry; Imperial College London; London SW7 2AZ UK
| | - Ramon Vilar
- Department of Chemistry; Imperial College London; London SW7 2AZ UK
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Bandeira S, Gonzalez-Garcia J, Pensa E, Albrecht T, Vilar R. A Redox-Activated G-Quadruplex DNA Binder Based on a Platinum(IV)-Salphen Complex. Angew Chem Int Ed Engl 2017; 57:310-313. [PMID: 29149495 DOI: 10.1002/anie.201709968] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/03/2017] [Indexed: 12/15/2022]
Abstract
There has been increasing interest in the development of small molecules that can selectively bind to G-quadruplex DNA structures. The latter have been associated with a number of key biological processes and therefore are proposed to be potential targets for drug development. Herein, we report the first example of a reduction-activated G-quadruplex DNA binder. We show that a new octahedral platinum(IV)-salphen complex does not interact with DNA in aqueous media at pH 7.4; however, upon addition of bioreductants such as ascorbic acid or glutathione, the compound is readily reduced to the corresponding square planar platinum(II) complex. In contrast to the parent platinum(IV) complex, the in situ generated platinum(II) complex has good affinity for G-quadruplex DNA.
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Affiliation(s)
- Stephane Bandeira
- Department of Chemistry, Imperial College London, London, SW7 2AZ, UK
| | | | - Evangelina Pensa
- Department of Chemistry, Imperial College London, London, SW7 2AZ, UK
| | - Tim Albrecht
- Department of Chemistry, Imperial College London, London, SW7 2AZ, UK
| | - Ramon Vilar
- Department of Chemistry, Imperial College London, London, SW7 2AZ, UK
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Zhou CQ, Liao TC, Li ZQ, Gonzalez-Garcia J, Reynolds M, Zou M, Vilar R. Dinickel-Salphen Complexes as Binders of Human Telomeric Dimeric G-Quadruplexes. Chemistry 2017; 23:4713-4722. [PMID: 28207952 PMCID: PMC5516229 DOI: 10.1002/chem.201700276] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Indexed: 12/12/2022]
Abstract
Three new polyether‐tethered dinickel–salphen complexes (2 a–c) have been synthesized and fully characterized by NMR spectroscopy, mass spectrometry, and elemental analyses. The binding affinity and selectivity of these complexes and of the parent mono‐nickel complex (1) towards dimeric quadruplex DNA have been determined by UV/Vis titrations, fluorescence spectroscopy, CD spectroscopy, and electrophoresis. These studies have shown that the dinickel–salphen complex with the longest polyether linker (2 c) has higher binding affinity and selectivity towards dimeric quadruplexes (over monomeric quadruplexes) than the dinickel–salphen complexes with the shorter polyether linkers (2 a and 2 b). Complex 2 c also has higher selectivity towards human telomeric dimeric quadruplexes with one TTA linker than the monometallic complex 1. Based on the spectroscopic data, a possible binding mode between complex 2 c and the dimeric G‐quadruplex DNA under study is proposed.
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Affiliation(s)
- Chun-Qiong Zhou
- Department of Chemistry, Imperial College London, South Kensington, London, SW72AZ, UK.,Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Ting-Cong Liao
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Zi-Qi Li
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Jorge Gonzalez-Garcia
- Department of Chemistry, Imperial College London, South Kensington, London, SW72AZ, UK
| | - Matthew Reynolds
- Department of Chemistry, Imperial College London, South Kensington, London, SW72AZ, UK
| | - Min Zou
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Ramon Vilar
- Department of Chemistry, Imperial College London, South Kensington, London, SW72AZ, UK
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Kotar A, Wang B, Shivalingam A, Gonzalez-Garcia J, Vilar R, Plavec J. NMR Structure of a Triangulenium-Based Long-Lived Fluorescence Probe Bound to a G-Quadruplex. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606877] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Anita Kotar
- Slovenian NMR Center; National Institute of Chemistry; Hajdrihova 19 1000 Ljubljana Slovenia
| | - Baifan Wang
- Slovenian NMR Center; National Institute of Chemistry; Hajdrihova 19 1000 Ljubljana Slovenia
| | - Arun Shivalingam
- Department of Chemistry; Imperial College London; South Kensington London SW7 2AZ UK
| | - Jorge Gonzalez-Garcia
- Department of Chemistry; Imperial College London; South Kensington London SW7 2AZ UK
| | - Ramon Vilar
- Department of Chemistry; Imperial College London; South Kensington London SW7 2AZ UK
| | - Janez Plavec
- Slovenian NMR Center; National Institute of Chemistry; Hajdrihova 19 1000 Ljubljana Slovenia
- EN-FIST Center of Excellence; Trg OF 13 1000 Ljubljana Slovenia
- Faculty of Chemistry and Chemical Technology; University of Ljubljana; Večna pot 113 Ljubljana Slovenia
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Kotar A, Wang B, Shivalingam A, Gonzalez-Garcia J, Vilar R, Plavec J. NMR Structure of a Triangulenium-Based Long-Lived Fluorescence Probe Bound to a G-Quadruplex. Angew Chem Int Ed Engl 2016; 55:12508-11. [PMID: 27577037 DOI: 10.1002/anie.201606877] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Indexed: 12/31/2022]
Abstract
An NMR structural study of the interaction between a small-molecule optical probe (DAOTA-M2) and a G-quadruplex from the promoter region of the c-myc oncogene revealed that they interact at 1:2 binding stoichiometry. NMR-restrained structural calculations show that binding of DAOTA-M2 occurs mainly through π-π stacking between the polyaromatic core of the ligand and guanine residues of the outer G-quartets. Interestingly, the binding affinities of DAOTA-M2 differ by a factor of two for the outer G-quartets of the unimolecular parallel G-quadruplex under study. Unrestrained MD calculations indicate that DAOTA-M2 displays significant dynamic behavior when stacked on a G-quartet plane. These studies provide molecular guidelines for the design of triangulenium derivatives that can be used as optical probes for G-quadruplexes.
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Affiliation(s)
- Anita Kotar
- Slovenian NMR Center, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia
| | - Baifan Wang
- Slovenian NMR Center, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia
| | - Arun Shivalingam
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, UK
| | - Jorge Gonzalez-Garcia
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, UK
| | - Ramon Vilar
- Department of Chemistry, Imperial College London, South Kensington, London, SW7 2AZ, UK
| | - Janez Plavec
- Slovenian NMR Center, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia. .,EN-FIST Center of Excellence, Trg OF 13, 1000, Ljubljana, Slovenia. .,Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, Ljubljana, Slovenia.
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Gama S, Rodrigues I, Mendes F, Santos IC, Gabano E, Klejevskaja B, Gonzalez-Garcia J, Ravera M, Vilar R, Paulo A. Anthracene-terpyridine metal complexes as new G-quadruplex DNA binders. J Inorg Biochem 2016; 160:275-86. [PMID: 27267415 DOI: 10.1016/j.jinorgbio.2016.04.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 03/15/2016] [Accepted: 04/03/2016] [Indexed: 12/21/2022]
Abstract
The formation of quadruple-stranded DNA induced by planar metal complexes has particular interest in the development of novel anticancer drugs. This is especially relevant for the inhibition of telomerase, which plays an essential role in cancer cell immortalization and is overexpressed in ca. 85-90% of cancer cells. Moreover, G-quadruplexes also exist in other locations in the human genome, namely oncogene promoter regions, and it has been hypothesized that they play a regulatory role in gene transcription. Herein we report a series of new anthracene-containing terpyridine ligands and the corresponding Cu(II) and Pt(II) complexes, with different linkers between the anthracenyl moiety and the terpyridine chelating unit. The interaction of these ligands and metal complexes with different topologies of DNA was studied by several biophysical techniques. The Pt(II) and Cu(II) complexes tested showed affinity for quadruplex-forming sequences with a good selectivity over duplex DNA. Importantly, the free ligands do not have significant affinity for any of the DNA sequences used, which shows that the presence of the metal is essential for high affinity (and selectivity). This effect is more evident in the case of the Pt(II) complexes. Moreover, the presence of a longer linker between the chelating terpyridine unit and the anthracene moiety enhances the interaction with G-quadruplex-forming sequences. We further evaluated the ability of the Cu(II) complexes to interact with, and stabilize G-quadruplex containing regions in oncogene promoters via a polymerase stop assay. These studies indicated that the metal complexes are able to induce G-quadruplex formation and stop polymerase activity.
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Affiliation(s)
- Sofia Gama
- Centro de Ciências e Tecnologias Nucleares (C(2)TN), Instituto Superior Técnico, Universidade de Lisboa, Portugal.
| | - Inês Rodrigues
- Centro de Ciências e Tecnologias Nucleares (C(2)TN), Instituto Superior Técnico, Universidade de Lisboa, Portugal
| | - Filipa Mendes
- Centro de Ciências e Tecnologias Nucleares (C(2)TN), Instituto Superior Técnico, Universidade de Lisboa, Portugal
| | - Isabel C Santos
- Centro de Ciências e Tecnologias Nucleares (C(2)TN), Instituto Superior Técnico, Universidade de Lisboa, Portugal
| | - Elisabetta Gabano
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "Amedeo Avogadro", Alessandria, Italy
| | - Beata Klejevskaja
- Department of Chemistry, Imperial College London, London SW7 2AZ, UK
| | | | - Mauro Ravera
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "Amedeo Avogadro", Alessandria, Italy
| | - Ramon Vilar
- Department of Chemistry, Imperial College London, London SW7 2AZ, UK
| | - António Paulo
- Centro de Ciências e Tecnologias Nucleares (C(2)TN), Instituto Superior Técnico, Universidade de Lisboa, Portugal
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Diez M, Diaz A, Garriga C, Pons M, Ten A, Marcos H, Gutierrez G, Moreno S, Gonzalez-Garcia J, Barrios A, Arponen S, Garcia M, Royo M, Toledo J, Gonzalez G, Aranguren R, Izquierdo A, Viloria L, Elizalde L, Martinez E, Castrillejo D, Lopez I, Redondo C, Cano A, The Hospital Survey Study Group C. A low-cost, sustainable, second generation system for surveillance of people living with HIV in Spain: 10-year trends in behavioural and clinical indicators, 2002 to 2011. ACTA ACUST UNITED AC 2014; 19. [PMID: 24871758 DOI: 10.2807/1560-7917.es2014.19.20.20805] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A second-generation surveillance system of people infected with human immunodeficiency virus (HIV) has been implemented in Spain. Behavioural and clinical data were collected between 2002 and 2011 through an annual one-day, cross-sectional survey in public hospitals, including all in- and outpatients receiving HIVrelated care on the survey day. Mean age increased over time (from 38.7 years in 2002 to 43.8 years in 2011) and 68.4% of the 7,205 subjects were male. The proportion of migrants increased from 6.1% to 15.9%, while people who inject or used to inject drugs (PWID and Ex-PWID) decreased and men who have sex with men (MSM) and heterosexuals increased. Unprotected intercourse at last sex increased among MSM and PWID/Ex-PWID. Patients receiving antiretroviral treatment increased significantly from 76.0% to 88.2% as did those with CD4 T-cell counts ≥350 (from 48.2% to 66.9%) and viral copies <200 (from 47.0% to 85.2%). HIV-infected people with hepatitis C virus RNA decreased from 36.0% in 2004 to 29.9% in 2011, while those with HBsAg remained stable at around 4.4%. Implementation of a low-cost, sustainable system for second-generation surveillance in people living with HIV is feasible. In Spain, the information obtained has helped to define and refine public health policy and document treatment effectiveness.
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Affiliation(s)
- M Diez
- Plan Nacional sobre el Sida. S.G. de Promocion de la Salud y Epidemiologia. Ministerio de Sanidad, Servicios Sociales e Igualdad (National Plan on AIDS. Subdirectorate of Health Promotion and Epidemiology. Ministry of Health, Social Services and Equality), Madrid, Spain
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15
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Berenguer J, von Wichmann MA, Quereda C, Miralles P, Mallolas J, Lopez-Aldeguer J, Alvarez-Pellicer J, De Miguel J, Crespo M, Guardiola JM, Tellez MJ, Galindo MJ, Arponen S, Barquilla E, Bellon JM, Gonzalez-Garcia J, Miralles P, Cosin J, Lopez JC, Padilla B, Sanchez Conde M, Bellon JM, Gutierrez I, Ramirez M, Carretero S, Aldamiz-Echevarria T, Tejerina F, Berenguer J, Alvarez-Pellicer J, Rodriguez E, Arribas JR, Montes ML, Bernardino I, Pascual JF, Zamora F, Pena JM, Arnalich F, Gonzalez-Garcia J, Bustinduy MJ, Iribarren JA, Rodriguez-Arrondo F, Von-Wichmann MA, Blanes M, Cuellar S, Lacruz J, Montero M, Salavert M, Lopez-Aldeguer J, Callau P, Miro JM, Gatell JM, Mallolas J, Ferrer A, Galindo MJ, Van den Eynde E, Perez M, Ribera E, Crespo M, Vergas J, Tellez MJ, Casado JL, Dronda F, Moreno A, Perez-Elias MJ, Sanfrutos MA, Moreno S, Quereda C, Jou A, Tural C, Arranz A, Casas E, de Miguel J, Schroeder S, Sanz J, Condes E, Barros C, Sanz J, Santos I, Hernando A, Rodriguez V, Rubio R, Pulido F, Domingo P, Guardiola JM, Ortiz L, Ortega E, Torres L:R, Cervero M, Jusdado JJ, Montes ML, Perez G, Gaspar G, Barquilla E, Mahillo B, Moyano B, Cotarelo M, Aznar E, Esteban H. Effect of accompanying antiretroviral drugs on virological response to pegylated interferon and ribavirin in patients co-infected with HIV and hepatitis C virus. J Antimicrob Chemother 2011; 66:2843-9. [DOI: 10.1093/jac/dkr362] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Perez-Molina JA, Mora-Rillo M, Suarez-Lozano I, Casado JL, Teira R, Rivas P, Pedrol E, Hernando A, Domingo P, Barquilla E, Esteban H, Gonzalez-Garcia J. Response to HAART according to sex and origin (immigrant vs autochthonous) in a cohort of patients who initiate antiretroviral treatment. J Int AIDS Soc 2010. [PMCID: PMC3112994 DOI: 10.1186/1758-2652-13-s4-p21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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17
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Louisnard O, Gonzalez-Garcia J, Tudela I, Klima J, Saez V, Vargas-Hernandez Y. FEM simulation of a sono-reactor accounting for vibrations of the boundaries. Ultrason Sonochem 2009; 16:250-259. [PMID: 18805036 DOI: 10.1016/j.ultsonch.2008.07.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2008] [Revised: 06/17/2008] [Accepted: 07/17/2008] [Indexed: 05/26/2023]
Abstract
The chemical effects of acoustic cavitation are obtained in sono-reactors built-up from a vessel and an ultrasonic source. In this paper, simulations of an existing sono-reactor are carried out, using a linear acoustics model, accounting for the vibrations of the solid walls. The available frequency range of the generator (19-21 kHz) is systematically scanned. Global quantities are plotted as a function of frequency in order to obtain response curves, exhibiting several resonance peaks. In absence of the precise knowledge of the bubbles size distribution and spatial location, the attenuation coefficient of the wave is taken as a variable, but spatially uniform parameter, and its influence is studied. The concepts of acoustic energy, intensity, active power, and source impedance are recalled, along with the general balance equation for acoustic energy, which is used as a convergence check of the simulations. It is shown that the interface between the liquid and the solid walls cannot be correctly represented by the simple approximations of either infinitely soft, or infinitely hard boundaries. Moreover, the liquid-solid coupling allows the cooling jacket to receive a noticeable part of the input power, although it is not in direct contact with the sonotrode. It may therefore undergo cavitation and this feature opens the perspective to design sono-reactors which avoid direct contact between the working liquid and the sonotrode. Besides, the possibility to shift the main pressure antinode far from the sonotrode area by exciting a resonance of the system is examined.
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Affiliation(s)
- O Louisnard
- Centre RAPSODEE, UMR CNRS 2392, Ecole des Mines d'Albi-Carmaux, Campus Jarlard, 81013 Albi Cedex 09, France.
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Varela-Rois P, Regueira-Portas M, de Prado-San Jose F, Gonzalez-Garcia J, de la Lama A, Rodriguez-Fernandez MJ, Iglesias-Castanon A. [Spontaneous spinal subdural hematoma]. Rev Neurol 2009; 48:156-158. [PMID: 19206064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- P Varela-Rois
- Servicio de Neurocirugía, Complejo Hospitalario Xeral-Cíes, Pizarro 22, Vigo, Pontevedra, Spain.
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Rodríguez-Torres M, Gonzalez-Garcia J, Bräu N, Solá R, Moreno S, Rockstroh J, Smaill F, Mendes-Correa MC, DePamphilis J, Torriani FJ. Occult hepatitis B virus infection in the setting of hepatitis C virus (HCV) and human immunodeficiency virus (HIV) co-infection: Clinically relevant or a diagnostic problem? J Med Virol 2007; 79:694-700. [PMID: 17457912 DOI: 10.1002/jmv.20836] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The clinical relevance of occult hepatitis B virus (HBV) infection, defined as detectable HBV DNA serum/liver, in the absence of hepatitis B surface antigen (HBsAg), is unclear. We determined the prevalence of serum occult HBV infection in HIV/HCV co-infected patients enrolled in APRICOT, a randomized multinational trial that investigated the efficacy and safety of peginterferon alfa-2a (40 kDa) plus ribavirin for treatment of HCV. We also examined the effect of prior HBV exposure to liver histology at baseline. Only HBsAg-negative patients were eligible. At screening, serum HBV DNA was assessed by commercial assay (detection limit = 200 copies/mL). Patients were divided into four serological groups: anti-HBs+/anti-HBc+; anti-HBs-/anti-HBc+; anti-HBs+/ anti-HBc-; anti-HBs-/anti-HBc-. Baseline liver biopsy grade and stage were compared among groups. Serum HBV DNA was undetectable in all patients, (n = 866). Results of anti-HBs and anti-HBc was available for 176 patients: 60 (34.1%) anti-HBs+/anti-HBc+; 60 (34.1%) anti-HBs-/anti-HBc+; 11 (6.3%) anti-HBs+/anti-HBc-; 45 (25.6%) anti-HBs-/anti-HBc-. There were no differences among the groups in the histological grade or stage at baseline liver biopsies. Occult HBV infection in serum was not detected in this large immunocompetent cohort. Moreover, prior exposure to HBV did not appear to have any affect on baseline liver histology.
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Cohen C, Nieto-Cisneros L, Zala C, Fessel WJ, Gonzalez-Garcia J, Gladysz A, McGovern R, Adler E, McLaren C. Comparison of atazanavir with lopinavir/ritonavir in patients with prior protease inhibitor failure: a randomized multinational trial. Curr Med Res Opin 2005; 21:1683-92. [PMID: 16238909 DOI: 10.1185/030079905x65439] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES To compare change from baseline in HIV RNA and fasting low-density lipoprotein (LDL) cholesterol levels in protease inhibitor (PI)-experienced patients receiving unboosted atazanavir 400 mg once daily versus lopinavir 400 mg boosted with ritonavir 100 mg twice daily, with two nucleoside reverse transcriptase inhibitors (NRTIs). Secondary objectives included virologic response, CD4 cell count changes, other lipid changes, safety, and tolerability. METHODS Randomized, open-label, multinational, 48-week study in patients with one PI-regimen failure, HIV RNA > or = 1000 copies/mL, and CD4 count > or = 50 cells/mm3. RESULTS Three hundred patients were randomized; 290 treated (144 atazanavir, 146 lopinavir/ritonavir). Lopinavir/ritonavir resulted in a significantly greater reduction in HIV RNA than unboosted atazanavir (-2.02 vs -1.59 log10 copies/mL, p < 0.001) at week 48. Secondary efficacy endpoints also favored lopinavir/ritonavir; the differences in efficacy between regimens were also observed in secondary analyses comparing those subjects who were susceptible and those subjects who were resistant to their respective PIs at baseline. However, both regimens were equally effective in subjects who had no baseline NRTI mutations. From baseline to week 48, atazanavir resulted in either no change or decreases in fasting LDL cholesterol, total cholesterol, and fasting triglycerides (-6%, -2%, and +1%), whereas lopinavir/ritonavir resulted in increases (+3%, +12%, and +53%) (p < 0.05, all between-treatment comparisons). Fewer patients were administered lipid-lowering therapy in the atazanavir arm (6% vs 20% for lopinavir/ritonavir). Both regimens were safe and well tolerated. CONCLUSIONS While both treatments demonstrated good antiviral efficacy, relatively greater antiviral suppression was observed with lopinavir/ritonavir. In those patients with no NRTI mutations at baseline, both regimens demonstrated comparable virologic suppression. Atazanavir-treated patients demonstrated a superior lipid profile and required less frequent lipid-lowering treatment.
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Affiliation(s)
- C Cohen
- Community Research Initiative of New England, Boston, Massachusetts 02215-3318, USA
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Johnson M, Nieto-Cisneros L, Horban A, Arasteh K, Gonzalez-Garcia J, Artigas JG, Clotet B, Danise A, Landman R, Proll S, Snowden W, Foreman R, Smith P. Comparison of gastrointestinal tolerability and patient preference for treatment with the 625 mg and 250 mg nelfinavir tablet formulations. HIV Med 2005; 6:107-13. [PMID: 15807716 DOI: 10.1111/j.1468-1293.2005.00272.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To compare gastrointestinal (GI) tolerability and patient preference for the new 625 mg formulation of nelfinavir (NFV) and the marketed 250 mg tablets (Viracept) in HIV-1-infected patients. METHODS Virologically controlled patients (n=126) treated with a nelfinavir (NFV) 250 mg-containing regimen for > or =8 weeks completed a stool diary for 14 days to assess baseline bowel function. After switching to the NFV 625 mg formulation [1250 mg twice a day (bid)] for 28 days, patients continued their stool diaries and at study completion answered a questionnaire regarding formulation preferences. RESULTS The incidence and mean weekly duration of GI upset over a 2-week period were lower with NFV 625 mg than with NFV 250 mg (79.8% vs. 84.9% of patients and 2.1 vs. 3.0 days, respectively). Fewer patients experienced moderate or severe diarrhoea with NFV 625 mg (6.5% vs. 11.1%), and the incidence of investigator-assessed diarrhoea also decreased with NFV 625 mg. Importantly, there was a significant improvement overall in the incidence of diarrhoea (any grade) when patients switched to NFV 625 mg [38 of 124 (31%) improving, 69 of 124 (56%) stable and 17 of 124 (14%) worsening on NFV 625 mg; P<0.01]. At study completion, most patients expressed a preference to continue treatment with NFV 625 mg [112 of 122 (91.8%); P<0.0001], with only one patient (0.8%) preferring to resume treatment with NFV 250 mg. The new formulation was well tolerated with no new safety concerns. CONCLUSIONS The new NFV 625 mg formulation is better tolerated and preferred by patients switching from NFV 250 mg tablets. By reducing the daily pill count and improving GI tolerability, the NFV 625 mg formulation may enhance patient adherence to NFV-containing antiretroviral regimens and thus potentially improve virological outcomes.
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Abstract
Granulocytic sarcoma (GS) is a tumour formed by myeloid precursors in an extramedullary site and is associated with myeloid leukaemias and other myeloproliferative disorders. We present a patient with symptoms of cauda equina compression where MRI of the spine showed extradural lesions at S1 and L3 levels. This patient had normal bone marrow and peripheral blood for a further 6 weeks from onset of symptoms. Such aleukaemic presentations of GS are rare and have potential for misdiagnosis and delay in treatment. Therefore we recommended early open biopsy of such tumours.
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Affiliation(s)
- G S Sandhu
- Department of Neurosurgery, North Staffordshire Hospital, Stoke-on-Trent, UK
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Gonzalez-Garcia J, Ghufoor K, Sandhu G, Thorpe PA, Hadley J. Primary extramedullary plasmacytoma of the parotid gland: a case report and review of the literature. J Laryngol Otol 1998; 112:179-81. [PMID: 9578882 DOI: 10.1017/s0022215100140253] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Solitary extramedullary plasmacytomas are uncommon malignant neoplasms with a great predilection for the upper respiratory tract. Extramedullary plasmacytoma involving the parotid gland is an extremely rare condition. This report describes the case of a primary extramedullary plasmacytoma arising in the right parotid gland of a 63-year-old man. A review of the literature reveals that this disease has generally a good prognosis. provided that multiple myeloma has been excluded. The treatment of choice should be surgical excision followed by radiotherapy, although from this study there is insufficient evidence to suggest that this is more effective than surgery alone. All patients must have regular long-term follow-up to monitor for recurrence or dissemination, in which event chemotherapy may be considered in addition to the other treatment modalities.
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Affiliation(s)
- J Gonzalez-Garcia
- Department of Otolaryngology, West Middlesex University Hospital, Isleworth, UK
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Fernandez-Diaz M, Herranz P, Lucas R, Gonzalez-Garcia J, Suarez-Marrero M, Contreras F, Casado M. Atypical herpes zoster in a patient with AIDS. J Eur Acad Dermatol Venereol 1995. [DOI: 10.1111/j.1468-3083.1995.tb00439.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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